To do this cheat is pretty simple,but you gots to have fast fingers.Ok,

first put on the invulnerability cheat(Hold C and press 1,1,1,1).Then go in some black ink,Dont worry you wont get hurt,Turn off the invulnerability cheat.Last when you are getting hurt turn the cheat back on. you will be stuck as a Black ink Blob,but you will not get hurt unless you turn the cheat off.To get rid of the Black ink simply jump in some water(keep the invulnerability on so you wont get hurt.The cheat is kinda lon ,but if your bored do it if you want.

When you finish a mission, go back to the same place where you got your mission. Then they will tell you that you already finished your mission. Then they will go back in there hole and a clock will appear on top of there hole. Another way to get more time is to press 1,2,1,2 while holding down C on your nunchuk.

To get extra lifes go to any level and hold the c button while typing b,b,1,1,2,2 and you will get a life and you can get to ten altogether. if you do the cheat to ten go find more so you can have a lot.